Yes. In women, high levels of caffeine consumption (500mg that is more than 5 cups of coffee a day) is associated with decreased fertility. In pregnancy even 2-3 cups of coffee/day can increase the chances of miscarriage or abortion. There is no effect of coffee on semen parameters. Contact Sumathi Hospital, the speciality Fertility clinic for your doubts regarding fertility or Pregnancy www.sumathihospital.com Ph : +91 73588 00889